#include "stdafx.h"
#include <iostream>
#include "Stack.h"

using namespace std;
int main_stacker(){
	Stack st;
	char ch;
	unsigned long po;
	cout <<"Please enter A  to add a purchase order,\n"
		<<"P to process a PO,or Q to quit.\n";
	while(cin >> ch && toupper(ch) != 'Q'){
		while(cin.get()!= '\n'){
			continue;
		}
		if(!isalpha(ch)){
			cout <<'\a';
			continue;
		}
		switch(ch){
		case 'A':
		case 'a':
			cout << "Enter a PO number to add:";
			cin >> po;
			if(st.isfull()){
				cout << "Stack already full \n";
			}
			else{
				st.push(po);
			}
			break;
		case 'P':
		case 'p':
			if(st.isempty()){
				cout <<"Stack already empty\n";
			}
			else{
				st.pop(po);
				cout <<"PO #" <<po <<" poped\n";
			}
			break;
		}
		cout <<"Please enter A to add a purchase order,\n"
			<<"P to process a PO,or Q to quit.\n";
	}
	cout <<"Bye\n";
	return 0;
}